Home / 870,061,056.32-1,305,078,806.03-215,012,064.94

Finding the Fourth Proportional to 870,061,056.32, 1,305,078,806.03 and 215,012,064.94

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Solution

The fourth proportional to 870,061,056.32, 1,305,078,806.03 and 215,012,064.94 is: 322,514,939.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,061,056.32 : 1,305,078,806.03 = 215,012,064.94 : x
  2. Step 2: Convert to fraction form
    870,061,056.32/1,305,078,806.03 = 215,012,064.94/x
  3. Step 3: Cross multiply
    870,061,056.32x = 1,305,078,806.03 × 215,012,064.94
  4. Step 4: Simplify right side
    870,061,056.32x = 280,607,688,989,602,272
  5. Step 5: Solve for x
    x = 280,607,688,989,602,272/870,061,056.32
  6. Step 6: Final answer
    x = 322,514,939.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.